In the process of artificial vegetative propagation known as grafting, which of the following terms correctly describes the rooted plant portion and the twig portion that is grafted onto it?

Options:

• A: Stock is the twig, Scion is the rooted plant.
• B: Scion is the twig, Stock is the rooted plant.
• C: Both are called Scion.
• D: Both are called Stock.

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